asn.dev

Observed topology

AS25394 MK-NETZDIENSTE-AS

Upstreams 30 carry this network
Downstreams 34 this network carries
Adjacent (IPv4) 64
Adjacent (IPv6) 35

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS25394: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv6558
AS6939Hurricane Electric LLCTransitIPv4 IPv6341
AS2914NTT America, Inc.TransitIPv4 IPv6277
AS3320Deutsche Telekom AGMobileIPv4 IPv686
AS174Cogent Communications, LLCTransitIPv473
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv664
AS50673Serverius Holding B.V.UnclassifiedIPv454
AS24482SG.GSHostingIPv4 IPv634
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv632
AS57821Nonattached Network e.V.UnclassifiedIPv4 IPv632
AS56655Gigahost ASUnclassifiedIPv4 IPv631
AS206499LOCIX LIMITEDUnclassifiedIPv427
AS37100SEACOM LimitedUnclassifiedIPv427
AS57463NetIX Communications JSCUnclassifiedIPv427
AS12552GlobalConnect ABUnclassifiedIPv427
AS37721Virtual Technologies & SolutionsResidentialIPv427
AS1836green.ch AGResidentialIPv427
AS34019Hivane AssociationUnclassifiedIPv427
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv427
AS12779IT.Gate S.p.A.UnclassifiedIPv427
AS17639Converge ICT Solutions Inc.UnclassifiedIPv427
AS49673Truenetwork LLCUnclassifiedIPv427
AS202365Omer GOLGELIUnclassifiedIPv425
AS212508Lowhosting services of Davide GennariUnclassifiedIPv425
AS34800Securebit AGUnclassifiedIPv425
AS29632Netassist International EOODUnclassifiedIPv612
AS205794JINZE YANGUnclassifiedIPv67
AS56662Marcin GondekUnclassifiedIPv67
AS213241TECHIT.BE SRLResidentialIPv66
AS12859BIT BVHostingIPv42

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you.

Transit

Downstream networks

inferred

Networks for which AS25394 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS59790Marco Bungalski GmbHResidentialIPv4639
AS206423binsec systems GmbHUnclassifiedIPv4 IPv6395
AS41723Jens Christian Schneeweiss trading as Technische SystemprogrammierungUnclassifiedIPv4 IPv6290
AS9188InfoServe GmbHHostingIPv4 IPv6273
AS41163RIZ IT MOTION GmbHUnclassifiedIPv4 IPv6207
AS209981System Crew GmbHUnclassifiedIPv4193
AS211909Hope Media Europe e.V.UnclassifiedIPv4192
AS9197becom Systemhaus Verwaltungs-GmbHUnclassifiedIPv4 IPv6168
AS215344connect2 GmbHUnclassifiedIPv4 IPv6163
AS20792VISTEC Internet Service GmbHUnclassifiedIPv4 IPv6155
AS42034DN-Systems Enterprise Internet Solutions GmbHUnclassifiedIPv4 IPv6131
AS31147Inline Internet Online Dienste GmbHHostingIPv4128
AS25560rh-tec Business GmbHHostingIPv4 IPv6122
AS201458InnKlinikum gKU Altoetting und MuehldorfUnclassifiedIPv4 IPv6103
AS207580Greenbone AGUnclassifiedIPv4 IPv6102
AS199703Landkreis KasselUnclassifiedIPv4 IPv6102
AS201901TMP-SYSTEM-SERVICE GmbHUnclassifiedIPv4 IPv6101
AS198956ARADOS GmbHUnclassifiedIPv4 IPv6101
AS213939Steffen Schiffel GmbHUnclassifiedIPv4 IPv6100
AS202741Martin Fichtner & Peter Feist GBRUnclassifiedIPv4 IPv673
AS43150MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KGUnclassifiedIPv4 IPv673
AS204197JD Invest GmbHUnclassifiedIPv472
AS56942Hansa Luftbild Consulting International GmbHUnclassifiedIPv465
AS213209TST GmbHUnclassifiedIPv464
AS211472SwissLink Carrier AGUnclassifiedIPv464
AS198205notebooksbilliger.de AGUnclassifiedIPv464
AS12915EPAG Domainservices GmbHUnclassifiedIPv4 IPv654
AS205094Tivon HaeberleinUnclassifiedIPv4 IPv652
AS49499Industrie und Handelskammer ReutlingenUnclassifiedIPv440
AS209379Pengutronix e.K.UnclassifiedIPv4 IPv636
AS206274HDI AGUnclassifiedIPv426
AS395753KKRUnclassifiedIPv424
AS47611Warner Music International Services LimitedUnclassifiedIPv415
AS203347Yalwa GmbHUnclassifiedIPv411

Adjacency

Adjacent networks

99 shown

Every AS seen directly next to AS25394 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3356Level 3 Parent, LLCTransitIPv4 IPv61,563
AS6939Hurricane Electric LLCTransitIPv4 IPv61,144
AS2914NTT America, Inc.TransitIPv4 IPv61,019
AS59790Marco Bungalski GmbHResidentialIPv4698
AS174Cogent Communications, LLCTransitIPv4 IPv6464
AS206423binsec systems GmbHUnclassifiedIPv4 IPv6395
AS41723Jens Christian Schneeweiss trading as Technische SystemprogrammierungUnclassifiedIPv4 IPv6290
AS9188InfoServe GmbHHostingIPv4 IPv6273
AS25560rh-tec Business GmbHHostingIPv4 IPv6242
AS41163RIZ IT MOTION GmbHUnclassifiedIPv4 IPv6207
AS34549meerfarbig GmbH & Co. KGHostingIPv4 IPv6194
AS209981System Crew GmbHUnclassifiedIPv4193
AS211909Hope Media Europe e.V.UnclassifiedIPv4192
AS3320Deutsche Telekom AGMobileIPv4 IPv6190
AS50673Serverius Holding B.V.UnclassifiedIPv4188
AS9197becom Systemhaus Verwaltungs-GmbHUnclassifiedIPv4 IPv6168
AS215344connect2 GmbHUnclassifiedIPv4 IPv6163
AS20792VISTEC Internet Service GmbHUnclassifiedIPv4 IPv6155
AS208972GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETIUnclassifiedIPv4138
AS206499LOCIX LIMITEDUnclassifiedIPv4132
AS42034DN-Systems Enterprise Internet Solutions GmbHUnclassifiedIPv4 IPv6131
AS31147Inline Internet Online Dienste GmbHHostingIPv4128
AS57821Nonattached Network e.V.UnclassifiedIPv4 IPv6125
AS48362Stadtwerke FeldkirchResidentialIPv4 IPv6119
AS49673Truenetwork LLCUnclassifiedIPv4110
AS56655Gigahost ASUnclassifiedIPv4 IPv6105
AS201458InnKlinikum gKU Altoetting und MuehldorfUnclassifiedIPv4 IPv6103
AS12779IT.Gate S.p.A.UnclassifiedIPv4102
AS207580Greenbone AGUnclassifiedIPv4 IPv6102
AS199703Landkreis KasselUnclassifiedIPv4 IPv6102
AS1836green.ch AGResidentialIPv4101
AS201901TMP-SYSTEM-SERVICE GmbHUnclassifiedIPv4 IPv6101
AS198956ARADOS GmbHUnclassifiedIPv4 IPv6101
AS213939Steffen Schiffel GmbHUnclassifiedIPv4 IPv6100
AS202365Omer GOLGELIUnclassifiedIPv494
AS24482SG.GSHostingIPv4 IPv693
AS37721Virtual Technologies & SolutionsResidentialIPv485
AS43150MK Netzdienste Verwaltungs GmbH trading as MK Netzdienste GmbH & Co. KGUnclassifiedIPv4 IPv673
AS202741Martin Fichtner & Peter Feist GBRUnclassifiedIPv4 IPv673
AS204197JD Invest GmbHUnclassifiedIPv472
AS37100SEACOM LimitedUnclassifiedIPv471
AS57463NetIX Communications JSCUnclassifiedIPv471
AS212508Lowhosting services of Davide GennariUnclassifiedIPv471
AS56942Hansa Luftbild Consulting International GmbHUnclassifiedIPv465
AS198205notebooksbilliger.de AGUnclassifiedIPv464
AS213209TST GmbHUnclassifiedIPv464
AS211472SwissLink Carrier AGUnclassifiedIPv464
AS12552GlobalConnect ABUnclassifiedIPv460
AS34800Securebit AGUnclassifiedIPv459
AS29632Netassist International EOODUnclassifiedIPv655
AS12915EPAG Domainservices GmbHUnclassifiedIPv4 IPv654
AS34019Hivane AssociationUnclassifiedIPv453
AS205094Tivon HaeberleinUnclassifiedIPv4 IPv652
AS17639Converge ICT Solutions Inc.UnclassifiedIPv4 IPv648
AS49499Industrie und Handelskammer ReutlingenUnclassifiedIPv440
AS209379Pengutronix e.K.UnclassifiedIPv4 IPv636
AS56662Marcin GondekUnclassifiedIPv635
AS213241TECHIT.BE SRLResidentialIPv629
AS205794JINZE YANGUnclassifiedIPv629
AS206274HDI AGUnclassifiedIPv426
AS395753KKRUnclassifiedIPv424
AS47611Warner Music International Services LimitedUnclassifiedIPv415
AS203347Yalwa GmbHUnclassifiedIPv411
AS29075IELO-LIAZO SERVICES SASUnclassifiedIPv49
AS35280F5 Networks SARLHostingIPv44
AS12859BIT BVHostingIPv43
AS50629LWLcom GmbHUnclassifiedIPv41
AS6461Zayo BandwidthTransitIPv41

Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Interconnection

Exchange presence

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS25394, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 5 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
DE-CIX FrankfurtFrankfurt, Germany80.81.192.1401,073
KleyReX Internet ExchangeFrankfurt, Germany193.189.82.125475
Local Internet Exchange FrankfurtFrankfurt, Germany185.1.167.119223
Megaport Frankfurt IXFrankfurt, Germany62.69.146.107114
Staclar Internet ExchangeFrankfurt, Germany185.1.180.199

Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.

Provenance

Where this comes from

Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.

Exchange presence comes from a separate dataset: the directory collected 2026-08-08 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,137 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.